Q. A human cell has 46 chromosomes before mitotic division. How many chromosomes will the daughter cells after mitosis.

answer choices

12

23

46

92

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Question 19

SURVEY

30 seconds

Q.

At the end of mitosis you have _____ cells

answer choices

identical

different

identical twins

variety

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Question 20

SURVEY

60 seconds

Q. Uncontrollable cell growth is known as _____

answer choices

obesity

cancer

diabetes

hepatitis

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Question 21

SURVEY

60 seconds

Q. The causes of cancer may include which of the following?

answer choices

environmental influences

UV radiation

viruses

all of these

Tags:

Question 22

SURVEY

30 seconds

Q. _ is the process of malingnant cells getting into the circulatory system and establish colonies in other parts of the body

answer choices

Tumor

Uncontrolled growth

Cancer

Metastsis

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Question 23

SURVEY

30 seconds

Q. The following image is a cell in: _________________

answer choices

Anaphase

Metaphase

Interphase

Telophase

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Question 24

SURVEY

30 seconds

Q. The following cells are in:

answer choices

Telophase

Prophase

Interphase

Metaphase

Tags:

Question 25

SURVEY

30 seconds

Q. The correct order of the cell cycle is:

answer choices

Interphase, Prophase, Anaphase, Metaphase, Telophase

Prophase, Anaphase, Metaphase, Interphase, Telophase

Interphase, Prophase, Metaphase, Anaphase, Telophase

Interphase, Telophase, Metaphase, Prophase, Anaphase

Tags:

Question 26

SURVEY

30 seconds

Q. This picture shows which process?

answer choices

mitosis

meiosis

binary fission

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Question 27

SURVEY

60 seconds

Q. Unlike mitosis, meiosis in male mammals results in the formation of

answer choices

one haploid gamete

three diploid gametes

four diploid gametes

four haploid gametes

Tags:

Question 28

SURVEY

30 seconds

Q. Why do we need meiosis?

answer choices

To double the number of chromosomes going into sex cells

To halve the number of chromosomes going into sex cells

To triple the number of chromosomes going into sex cells

To not change the number of chromosomes going into sex cells

Tags:

Question 29

SURVEY

30 seconds

Q. A human zygote should have _____ chromosomes inside.

answer choices

46

23

92

64

Tags:

Question 30

SURVEY

30 seconds

Q. When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs

answer choices

crossing over

mutagenesis

hybridization

fertilization

Tags:

Question 31

SURVEY

60 seconds

Q. If a body cell in a butterfly contains 24 chromosomes, a butterfly egg would contain

answer choices

3

6

12

24

Tags:

Question 32

SURVEY

60 seconds

Q. The chromosomes that pair up during meiosis, are called __________ chromosomes.

answer choices

homozygous

asexual

homologous

genes

Tags:

Question 33

SURVEY

60 seconds

Q. Identify the phase.

answer choices

Metaphase I

Metaphase II

Prophase I

Anaphase II

Tags:

Question 34

SURVEY

30 seconds

Q. Turner's Syndrome is monosomy of which chromosome?

answer choices

18

21

sex chromosome

13

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Question 35

SURVEY

30 seconds

Q. What chromosome is affected by Down's Syndrome?

answer choices

23

18

13

21

Tags:

Question 36

SURVEY

30 seconds

Q. What is the haploid number for this Karyotype?

answer choices

26

27

52

54

Tags:

Question 37

SURVEY

30 seconds

Q. When it is written that a cell has a n=5, this means:

answer choices

There are 5 copies of each chromosome

There are 5 unique types of chromosomes

The cell has gone through 5 divisions

The cell is diploid

Tags:

Question 38

SURVEY

30 seconds

Q. An allele is:

answer choices

Another term for sex chromosome

A version of a gene

The physical expression of an organism's genotype

A haploid cell

Tags:

Question 39

SURVEY

180 seconds

Q. What does heterozygous mean?

answer choices

An organism that has the same genes for a trait (TT or tt)

An organism that has different genes for a trait (Tt)

When neither gene is fully dominant; offspring is a mixture of both

the different forms of a trait (hair color--> brown, blonde, red

Tags:

Question 40

SURVEY

60 seconds

Q. If T=Tall & t=short, what is the genotypic ratio?

answer choices

1:3

3:1

1:2:1

2:2

Tags:

Question 41

SURVEY

180 seconds

Q. What is a phenotype?

answer choices

The expression of a trait; what you see.

refers to the genetic makeup of an individual

An organism that has the same genes for a trait (ex. TT or tt)

the passing of traits from parent to offspring

Tags:

Question 42

SURVEY

180 seconds

Q. If green is dominant over purple, then what is the genotype for this individual?

answer choices

Purple

Green

GG

gg

Tags:

Question 43

SURVEY

900 seconds

Q. A hairline that comes to a point in the center of the forehead is called a widow's peak. Having a widow's peak is a dominant trait, while having a straight hairline is a recessive trait. Cate, a woman with a widow's peak, has two children with James, a man with a straight hairline like her father.What is the probability that their next child will have a straight hairline?

answer choices

0%

25%

50%

75%

Tags:

Question 44

SURVEY

900 seconds

Q. Some traits are determined by a single gene; for example, presence of freckles (F) is a dominant trait, and lack of freckles (f) is recessive. Having detached earlobes (D) is a dominant trait, and having attached earlobes (d) is recessive.Pedro and his wife Rosa have detached earlobes, but Rosa has freckles and Pedro does not. Their daughter Jessica has attached earlobes and does not have freckles. Which of the following genotypes must Rosa have?

answer choices

FFDD

FFDd

FfDD

FfDd

Tags:

Question 45

SURVEY

900 seconds

Q. A goat that is heterozygous for long hair (Hh) and curved horns (Cc) mates with a goat that is homozygous for short hair (hh) and straight horns (cc). Which of the following genotypes is impossible for their offspring to have?

answer choices

HhCc

HHCc

hhCc

hhcc

Tags:

Question 46

SURVEY

30 seconds

Q. Gel electrophoresis enables scientists to

answer choices

separate DNA fragments.

combine DNA fragments.

count the genes in DNA.

insert DNA in cells.

Tags:

Question 47

SURVEY

60 seconds

Q. Which two bear species are most closely related?

answer choices

Bear 1 and Bear 2

Bear 1 and Bear 3

Bear 2 and Bear 3

There’s no way to tell

Tags:

Question 48

SURVEY

60 seconds

Q. Why do the fragments of DNA in gel electrophoresis travel away from the negative electrode?

answer choices

DNA is negatively charged

DNA is positively charged

the agarose gel in negatively charged

the agarose gel is positively charged

Tags:

Question 49

SURVEY

60 seconds

Q. In gel electrophoresis, the largest DNA fragment will appear

answer choices

closest to the starting wells

farthest from the starting wells

three quarters away from the starting wells

it depends on how many fragments there are

Tags:

Question 50

SURVEY

30 seconds

Q. Which of the Dad's is Kid 1's father?

answer choices

Dad 1

Dad 2

Neither

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Question 51

SURVEY

120 seconds

Q. Enyzmes are a very important type of protein used to

answer choices

Build bones in skeleton

Send hormonal signals throughout body

Speed up chemical reactions

Photosynthesize glucose in plants

Tags:

Question 52

SURVEY

300 seconds

Q. This is one job proteins do NOT have in the body

answer choices

storing genetic information

structure

speed up chemical reactions

transport things through cell membrane

Tags:

Question 53

SURVEY

120 seconds

Q. What is the monomer of proteins?

answer choices

amino acids

polypeptides

nucleotides

monosaccharides

Tags:

Question 54

SURVEY

120 seconds

Q. What is the function of messenger RNA (mRNA)?

answer choices

Makes of ribosomes

Brings amino acids to the ribosomes

Copies DNA in the nucleus

None of the above

Tags:

Question 55

SURVEY

30 seconds

Q. In RNA, Uracil pairs with ______.

answer choices

cytosine

adenine

guanine

thymine

Tags:

Question 56

SURVEY

30 seconds

Q. The process to go from DNA to mRNA is _______

answer choices

translation

transcription

replication

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Question 57

SURVEY

30 seconds

Q. The process to go from mRNA to a protein is called ____

answer choices

transcription

rRNA

replication

translation

Tags:

Question 58

SURVEY

120 seconds

Q. Choose the nucleotide sequence of the RNA strand that would be complementary to the following strand: GTAGTCA

answer choices

UATUAGA

ACGACTG

CAUCAGU

CATCAGT

Tags:

Question 59

SURVEY

120 seconds

Q. The main function of tRNA is to...

answer choices

carry a message that, when translated, forms proteins

form a portion of ribosomes

string together complementary RNA and DNA strands

bring amino acids from the cytoplasm to the ribosomes

Tags:

Question 60

SURVEY

30 seconds

Q. What amino acid is represented by the codon UUA?

answer choices

Phenylalanine

Tyrosine

Leucine

Stop codon

Tags:

Question 61

SURVEY

60 seconds

Q. What is the purpose of transcription?

answer choices

to make protein

to make ribosomes

to make nucleus

to make mRNA

Tags:

Question 62

SURVEY

30 seconds

Q. What is the location in the cell for translation?

answer choices

nucleus

mitochondria

ribosome

chloroplast

Tags:

Question 63

SURVEY

30 seconds

Q. What is the three base sequence of mRNA that codes for a single amino acid?

answer choices

Anticodon

Codon

Amino-acid

tRNA

Tags:

Question 64

SURVEY

30 seconds

Q. The difference in the physical traits of an individual from those of other individuals in a group is called a(n)

answer choices

change

adaption

species

variation

Tags:

Question 65

SURVEY

30 seconds

Q. what did Charles Darwin observe in finch populations of the Galapagos Islands off the coast of South America?

answer choices

different species on different islands

all species on one of the islands

identical species on all the islands

the same species as North America

Tags:

Question 66

SURVEY

30 seconds

Q. In natural selection, the selective agent is the

answer choices

humans

mutations

breeders

environment

Tags:

Question 67

SURVEY

30 seconds

Q. All rabbits living in a particular area would be an example of a(n)

answer choices

population

species

fossil

individual organism

Tags:

Question 68

SURVEY

30 seconds

Q. which of the folllowing is an exammple of a vestigial structure?

answer choices

the wings of a red-tailed hawk

the hind limbs of a house cat

the fins of sharks

the wings of an ostrich

Tags:

Question 69

SURVEY

30 seconds

Q. Mutations are important because they bring about

answer choices

death of the organism in which they develop

genetic variation needed for a population to evolve

benefits for the individual, not for the population

Hardey-Weinberg equilibrium within a population

Tags:

Question 70

SURVEY

30 seconds

Q. Natural selection results in change over time by acting on traits that are

answer choices

heritable

new

mutated

better than the best

Tags:

Question 71

SURVEY

30 seconds

Q.

The combined alleles of all individuals in a population is called the population's

answer choices

phenothype

gene pool

mutation rate

allele frequency

Tags:

Question 72

SURVEY

45 seconds

Q. Structures with the same parts have different functions; suggests that organisms share a common ancestry

answer choices

vestigial structures

homologous structures

adaptive radiation

fossil

Tags:

Question 73

SURVEY

20 seconds

Q. The area that the substrate fits into on the enzyme is called the:

answer choices

Active Site

Allosteric Site

DiSulphide Bridge

β-Pleated Sheet

Tags:

Question 74

SURVEY

5 seconds

Q. Enzymes catalyze reactions by ___________ Activation Energy.

answer choices

Increasing

Decreasing

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Question 75

SURVEY

20 seconds

Q. At high temperatures enzyme activity declines because of:

answer choices

Denaturation

Decreased Kinetic Motion

Increased H-Bonding

Dissociation of Ionic Compounds

Tags:

Question 76

SURVEY

10 seconds

Q. The molecule an enzyme is working on is called the:

answer choices

Substrate

Solvent

Allosteric Inhibitor

CoEnzyme

Tags:

Question 77

SURVEY

120 seconds

Q. Which of the following molecules make up the basic structure of a cell membrane?

answer choices

waxes

steroids

fatty acids

phospholipids

Tags:

Question 78

SURVEY

120 seconds

Q. What are different examples of lipids?

answer choices

monosaccahrides, disaccharides, starch, cellulose

dipetide, polypeptide, amino acids

DNA, RNA, ATP

triglycerides, waxes, steroids, phospholipds

Tags:

Question 79

SURVEY

120 seconds

Q. This molecule is a

answer choices

carbohydrate

nucleic acid

protein

lipid

Tags:

Question 80

SURVEY

120 seconds

Q. Saturated fats are __________ at room temperature.

answer choices

liquid

gases

plasma

solid

Tags:

Question 81

SURVEY

60 seconds

Q. What is another term for "selectively permeable"?

answer choices

porous

completely permeable

permanent

semipermeable

Tags:

Question 82

SURVEY

60 seconds

Q. The function of the plasma membrane is....

answer choices

to regulate what enters and leaves the cell.

fight bacteria and viruses that enter the cell.

provide rigid support and protection to the cell.

make sure each cell can move

Tags:

Question 83

SURVEY

60 seconds

Q. Hydrophilic portion of cell membrane?

answer choices

A

C

D

E

Tags:

Question 84

SURVEY

30 seconds

Q. Which of the following sequences of processes correctly reflects the central dogma?

answer choices

protein synthesis, transcription, translation

protein synthesis, translation, transcription

transcription, translation, protein synthesis

translation, transcription, protein synthesis

Tags:

Question 85

SURVEY

30 seconds

Q. Which do DNA and RNA have in common?

answer choices

Both are double stranded.

Both contain ribose molecules.

Both contain phosphate groups.

Both contain uracil.

Tags:

Question 86

SURVEY

120 seconds

Q. In RNA, the nitrogen base____ replaces ____ that was present in DNA.

answer choices

A, U (adenine, uracil)

C, G (cytosine, guanine)

U, T (uracil, thymine)

U, A (uracil, adenine)

Tags:

Question 87

SURVEY

30 seconds

Q.

In order for offspring to get a genetic mutation, the mutation must occur in what type of cell?

answer choices

Cells with no nucleus.

Any body cell after birth.

Cells with no cell wall or cell membrane.

Cells like eggs or sperm cells that are undergoing reproduction.

Tags:

Question 88

SURVEY

180 seconds

Q. a change in one DNA triplet that may result in a new triplet that codes for a stop codon instead of an amino acid is known as